define procinput
proc(a, b, c, d, e)

	return := a( b ( c, d ) , e )

end;

u := 4;
v := 5;
w := 7;

x := procinput(
proc(i, j)
	return := i + j
end, 
proc(k, l)
	return := k * l
end, 
u, v, w)
